245731087 has 8 divisors (see below), whose sum is σ = 286811136. Its totient is φ = 206144952.

The previous prime is 245731069. The next prime is 245731121. The reversal of 245731087 is 780137542.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 245731087 - 2¹⁵ = 245698319 is a prime.

It is a super-3 number, since 3×245731087³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245731037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373123 + ... + 373780.

It is an arithmetic number, because the mean of its divisors is an integer number (35851392).

Almost surely, 2^245731087 is an apocalyptic number.

245731087 is a deficient number, since it is larger than the sum of its proper divisors (41080049).

245731087 is an equidigital number, since it uses as much as digits as its factorization.

245731087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746957.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 245731087 is about 15675.8121639678. The cubic root of 245731087 is about 626.3542576983.

The spelling of 245731087 in words is "two hundred forty-five million, seven hundred thirty-one thousand, eighty-seven".